{ ***  cef_life_span_handler_capi.h  *** }

  PCefLifeSpanHandler = ^TCefLifeSpanHandler;

  // Implement this structure to handle events related to browser life span. The
  // functions of this structure will be called on the UI thread unless otherwise
  // indicated.
  TCefLifeSpanHandler = record
    // Base structure.
    base: TCefBase;

    // Called on the IO thread before a new popup window is created. The |browser|
    // and |frame| parameters represent the source of the popup request. The
    // |target_url| and |target_frame_name| values may be NULL if none were
    // specified with the request. The |popupFeatures| structure contains
    // information about the requested popup window. To allow creation of the
    // popup window optionally modify |windowInfo|, |client|, |settings| and
    // |no_javascript_access| and return false (0). To cancel creation of the
    // popup window return true (1). The |client| and |settings| values will
    // default to the source browser's values. The |no_javascript_access| value
    // indicates whether the new browser window should be scriptable and in the
    // same process as the source browser.
    {$NOTE check twice}
    on_before_popup: function(self: PCefLifeSpanHandler;
      browser: PCefBrowser; frame: PCefFrame;
      const target_url, target_frame_name: PCefString;
      const popupFeatures: PCefPopupFeatures;
      windowInfo: PCefWindowInfo; var client: PCefClient;
      settings: PCefBrowserSettings; no_javascript_access: PInteger): Integer; cconv;

    // Called after a new browser is created.
    on_after_created: procedure(self: PCefLifeSpanHandler; browser: PCefBrowser); cconv;

    // Called when a modal window is about to display and the modal loop should
    // begin running. Return false (0) to use the default modal loop
    // implementation or true (1) to use a custom implementation.
    run_modal: function(self: PCefLifeSpanHandler; browser: PCefBrowser): Integer; cconv;

    // Called when a browser has recieved a request to close. This may result
    // directly from a call to cef_browser_host_t::close_browser() or indirectly
    // if the browser is a top-level OS window created by CEF and the user
    // attempts to close the window. This function will be called after the
    // JavaScript 'onunload' event has been fired. It will not be called for
    // browsers after the associated OS window has been destroyed (for those
    // browsers it is no longer possible to cancel the close).
    //
    // If CEF created an OS window for the browser returning false (0) will send
    // an OS close notification to the browser window's top-level owner (e.g.
    // WM_CLOSE on Windows, performClose: on OS-X and "delete_event" on Linux). If
    // no OS window exists (window rendering disabled) returning false (0) will
    // cause the browser object to be destroyed immediately. Return true (1) if
    // the browser is parented to another window and that other window needs to
    // receive close notification via some non-standard technique.
    //
    // If an application provides its own top-level window it should handle OS
    // close notifications by calling cef_browser_host_t::CloseBrowser(false (0))
    // instead of immediately closing (see the example below). This gives CEF an
    // opportunity to process the 'onbeforeunload' event and optionally cancel the
    // close before do_close() is called.
    //
    // The cef_life_span_handler_t::OnBeforeclose() function will be called
    // immediately before the browser object is destroyed. The application should
    // only exit after OnBeforeclose() has been called for all existing browsers.
    //
    // If the browser represents a modal window and a custom modal loop
    // implementation was provided in cef_life_span_handler_t::run_modal() this
    // callback should be used to restore the opener window to a usable state.
    //
    // By way of example consider what should happen during window close when the
    // browser is parented to an application-provided top-level OS window. 1.
    // User clicks the window close button which sends an OS close
    //     notification (e.g. WM_CLOSE on Windows, performClose: on OS-X and
    //     "delete_event" on Linux).
    // 2.  Application's top-level window receives the close notification and:
    //     A. Calls CefBrowserHost::CloseBrowser(false).
    //     B. Cancels the window close.
    // 3.  JavaScript 'onbeforeunload' handler executes and shows the close
    //     confirmation dialog (which can be overridden via
    //     CefJSDialogHandler::OnBeforeUnloadDialog()).
    // 4.  User approves the close. 5.  JavaScript 'onunload' handler executes. 6.
    // Application's do_close() handler is called. Application will:
    //     A. Set a flag to indicate that the next close attempt will be allowed.
    //     B. Return false.
    // 7.  CEF sends an OS close notification. 8.  Application's top-level window
    // receives the OS close notification and
    //     allows the window to close based on the flag from #6B.
    // 9.  Browser OS window is destroyed. 10. Application's
    // cef_life_span_handler_t::OnBeforeclose() handler is called and
    //     the browser object is destroyed.
    // 11. Application exits by calling cef_quit_message_loop() if no other
    // browsers
    //     exist.
    do_close: function(self: PCefLifeSpanHandler; browser: PCefBrowser): Integer; cconv;

    // Called just before a browser is destroyed. Release all references to the
    // browser object and do not attempt to execute any functions on the browser
    // object after this callback returns. If this is a modal window and a custom
    // modal loop implementation was provided in run_modal() this callback should
    // be used to exit the custom modal loop. See do_close() documentation for
    // additional usage information.
    on_before_close: procedure(self: PCefLifeSpanHandler; browser: PCefBrowser); cconv;
  end;


